A phylogenetic mosaic plastid proteome and unusual plastid-targeting signals in the green-colored dinoflagellate <Emphasis Type="Italic">Lepidodinium chlorophorum</Emphasis> |
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| Authors: | Marianne A Minge Kamran Shalchian-Tabrizi Ole K Tørresen Kiyotaka Takishita Ian Probert Yuji Inagaki Dag Klaveness Kjetill S Jakobsen |
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| Institution: | (1) Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biology, University of Oslo, N-0316 Oslo, Norway;(2) Microbial Evolutionary Research Group (MERG), Department of Biology, University of Oslo, N-0316 Oslo, Norway;(3) Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 237-0061 Yokosuka, Kanagawa, Japan;(4) Roscoff Culture Collection (RCC), Station Biologique de Roscoff, Place Georges Teissier, 29682 Roscoff, France;(5) Center for Computational Sciences, Institute for Biological Sciences, University of Tsukuba, 305-8577 Tsukuba Ibaraki, Japan |
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| Abstract: | Background Plastid replacements through secondary endosymbioses include massive transfer of genes from the endosymbiont to the host nucleus
and require a new targeting system to enable transport of the plastid-targeted proteins across 3-4 plastid membranes. The
dinoflagellates are the only eukaryotic lineage that has been shown to have undergone several plastid replacement events,
and this group is thus highly relevant for studying the processes involved in plastid evolution. In this study, we analyzed
the phylogenetic origin and N-terminal extensions of plastid-targeted proteins from Lepidodinium chlorophorum, a member of the only dinoflagellate genus that harbors a green secondary plastid rather than the red algal-derived, peridinin-containing
plastid usually found in photosynthetic dinoflagellates. |
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